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Bending and vibration of multilayer sandwich beams and plates
Author(s) -
Khatua T. P.,
Cheung Y. K.
Publication year - 1973
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.1620060103
Subject(s) - orthotropic material , bending , vibration , materials science , finite element method , structural engineering , displacement (psychology) , shear (geology) , composite material , engineering , physics , acoustics , psychology , psychotherapist
A finite element displacement analysis of multilayer sandwich beams and plates, each with n stiff layers and n −1 weak cores, is presented. Each layer of the sandwich structure may have individual orthotropic properties of its own and the bending rigidities of the stiff layers are taken into account while direct stresses in cores are neglected in the analysis. The condition of common shear angle for all cores, which has been used by several authors is not implied in the formulation. Several examples on bending problems have been solved using lower‐order elements and the accuracy of the results has been shown to be excellent. Two higher‐order elements have also been developed but have not been found to yield much better results. The free vibration problems of multilayer sandwich structures have also been solved, and good accuracy is demonstrated.